fix: load mjs file for esm browser env

[DylanPiercey]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.78%. Comparing base (b4d9a99) to head (49a2056).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #26   +/-   ##
=======================================
  Coverage   83.78%   83.78%           
=======================================
  Files           3        3           
  Lines         222      222           
  Branches       62       62           
=======================================
  Hits          186      186           
  Misses         32       32           
  Partials        4        4           

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